Perforating machine



Dec. 3, 1929. P. A..JUUL

PERFORATING MACHINE Filed Sept. 15, 1924 5 Sheets-Sheet my! M W4 Dec. 3, 1929. P. A. JUUL 1,737,851

PERFORATING MACHINE Filed Sept. 15. 1924 3 Sheets-Sheet 2 Dec. 3, 1929. P. A. JUUL PERFORATING MACHINE Filed Sept. 15. 1924 3 Sheets-Sheet 3 11/ i '1 l l 1 I14 Patented Dec. 3, 1929 UNETEL ATES PATENT PETER A. JUUL, OF CHICAGO, ILLINOIS, ASSIGNOR TO- LATHAM' MACHINERX'GOMPANY A CORPORATION OF ILLINOIS PERFORATIN MACHINE.

Application filed September 15, 1924.. Serial No. 737 675.

This invention relates to paper perforating machines.

Heretofore it has been the practice in connection with the repair or replacement of the die and stripper of perforating machines to return the whole machine or the complete head. and bed to the factory. This entails considerable inconvenience and trouble on the part. of the user of the machine because he is deprived, of the use of the same during all of this time and in addition the perforator head and bed constitute the major portion ofv the machine, which is heavy and cumbersome to transport.

It is-therefore the principal object of the presentinvention to overcome these difficulties by. providing an improved form of paper perforating machine by means of which a relatively small portion or unit of the machine containing the die, the stripper, the

pin holder bar and its perforating pins may be readily detached and a new unit substituted while the first unit is being repaired.

A still further object of the invention is to provide a simple and efficient construction which will permit easy removal of the parts comprising the aforesaid unit, and will securely. hold these parts when subjected to strains or ars during shipment, thus avoidinglikeiy injury to the delicate perforating pins, which are ordinarily quite small in paper perforating machines, being often no larger than knitting needles and will furtherprotect parts of the die or die plate coopera ing with these pins.

These and other objects are accomplished by; providinga structure by means of which supplemental bed and stripper holder which carry the die and stripper respectively, to-

4.0 gether with the pin holder bar and associated parts are detachable as a unit from the main bed and reciprocating head of the machine. Referrin to the drawings Fig. 1 is a side elevational View of a perforating machine 46 showing my improvement mounted therein. Fig. 2 is a front elevational view of the perforating machine shown in Fig. 1.

Fig. 3 is an enlarged cross sectional view taken on the lines 33 in Fig. 2.

Fig. 4 is an enlarged detail View of the perforating mechanism: showing the. manner in which the slugsmay beremovedfor ren-. dering certain of thea'perforatlng p1ns.in-. operative, and i Fig. 5. is an enlarged. detail. cross sectionalf view taken on the lines ,5.5,in. Fig. 2, show.-

ing the retaining pins which accurately posi For the purpose of il lustnation' I have. shown my improved constructlon 1n connec-..

tion with perforating machine comprising. two side frame members, 10. having l'egs, 11: which are adapted, to restonthe floor. The, side frame members are rigidly secured to gether by transverserods 12, and 13. See cured to'the upper endv of the side. frame members 1 0, by. meansofj bolts, 1.4== is a main bed 15. This main bed 15, extendsv afirossthe machine and is reinforcedrby: a long-itudinal rib 16 formed, integrally with the bed. Secured to the upper ends of the-main bed" in sockets 17" by means of bolts 18 are vertical, shafts 19. The upper ends of the sha-ftsl t): are rigidly secured'together by a transverse bar 20. The bar 20 is preferably secured. to. the upper ends of the shafts 19 by. having their outer ends perforatedand'. adapted'to" receive reduced threaded,p0rtions21 of each of the shafts and, retainthe sameby meansofinuts 22, Reciprocally mounted on the vertical shafts 19 is a perforating head 23. The perforating head 23jispositioned above the main bed 15 and, is provided with, reciproeating bearings 24:01 theiouterends thereof which slidably engage the shaft, 19. Thereciprocating head 28 is operatively driven by reciprocating pitmans 25, which are posi-. tioned onthe opposite sides of the machine. and have their upper ends operatively connected by bearing Connections 26. to studs 27 formed integrally with, and extending. out: wardly from, the reciprocating bearing portion 2 10f the reciprocating head. The lower. ends of the pitmans 25. are operatively connected by bearing connections 28 which, in turn, are ournalled to eccentric portions. 29. of a drive shaft. 30. The drive shaft, 30 is operatively driven by a motor 31, which is geared to the shaft through a pinion connection 32, a gear 33 and a clutch mechanism 34. The perforating mechanism herein shown is also provided with a braking mechanism 35 and a foot treadle control 36. The braking mechanism 35 and the clutch mechanism 34 per se do not form any part of the present invention, and for this reason a detailed description of the same has been omitted.

It will, of course, be understood that the brake and clutch mechanism herein shown may be of any well known construction. The novel feature of my improved perforating mechanism is the provision of means whereby a small portion of the perforating mechanism may be readily removed so that proper repair or the substitution of a new unit comprising stripper, die, pin holder and perfo rating pins may be easily made without any loss of time or inconvenience on the part of the user of the machine and furthermore, and which is of great importance, the replacement may be made by anunskilled mechanic. This is accomplished by making the bed in two parts, a main bed, as shown at 15 and a supplemental bed as shown at 37. The supplemental bed is provided with machined or finished lower portions 38 and 39 which are adapted to contact with corresponding machined or finished portions 40 and 41, respectively, of the main bed 15. The supplemental bed 37 is detachably secured to the main bed 15 by a plurality of bolts 42 which extend through apertures arranged at regular intervals in the main body and are in threaded engagement with the threaded apertures 43 in the supplemental bed. Secured to the upper forward surface of the supplemental bed 37 in a recess 44 preferably by countersunk screws (not shown) is a die 45. The forward edge of the die 45 as shown at 46 overhangs the forward edge 47 of the supplemental bed. Extending longitudinally of the die 45 are a plurality of'perforations 48. Secured to the supplemental bed 37 at the outer ends thereof and extending across the bed so as to form a recess therebetween as shown at 49 is a stripper holder 50. The stripper holder is secured at its opposite ends to the supplemental bed 37 by means of bolts 51. By this arrangement it will readily be seen that the stripper holder 50 extends across the machine and parallel with the supplemental bed in such a manner as to form a space 49 therebetween for the reception of paper as it is being perforated in the perforating machine. Mounted in the forward edge of the stripper holder 50 and preferably in a recess 51 formed therein, by means of countersunk screws 52 isa stripper 53. The stripper 53 overhangs the forward edge of the stripper holder 50 and is provided with a plurality of apertures 54 which are adapted to reciprocally receive perforating pins 55.

The apertures 54 of the stripper 53 register with the apertures 48 of the die 45. The stripper holder 50 is reinforced by a longitudinally extending rib 50 which is large at its longitudinal center and gradually tapers at the outer ends of the stripper holder thus reinforcing and strengthening the stripper holder.

Secured to the reciprocating head 23, and preferably to a laterally extending portion of flange 23 thereof, is a pin holder bar 56. This pin holder bar 56 is secured to the reciprocating head 23 by a plurality of bolts 57.

From the above description it will be readily seem that when the plurality of bolts 42 which secure the supplemental bed to the main bed are removed and the bolts 57 by which the pin holder bar 56 is secured to the head are withdrawn from the bar 56, the supplen'iental bed 37, the stripper holder 50 which carries stripper 53, together with the pin holder bar 56 and parts carried thereby, may be removed as a unit and a new unit carrying the substituted parts replaced in its stead. Secured in a recess 58 formed in the forward side of the pin holder bar 56 is a pin holder 59 of substantially L-shaped construction. The pin holder 59 is provided on a forwardly projecting portion 60 thereof with a plurality of apertures 61 which are adapted to receive and have seated tnerein a plurality of perforating pins 55 in such a manner that these pins register with the apertures 54 in the stripper 53. The perforating pins 55 are normally held in a relatively fixed position with respect to the pin holder by a plurality of slugs 62 which rest on the heads of the pins and between the heads of the pins and a pin bar 63. This pin bar extends across the top of the slugs 62 and engages the pin bar holder 56 on its upper surface thereof. When it is desired to permit only certain of the pins 55 to perforate the paper being worked upon, certain of the slugs may be removed as shown in Fig. 4 so that the paper may be perforated in any desired manner.

In order to further facilitate the replacement of the supplemental bed the pin holder and stripper holder as a unit on the machine so that the perforating pins 55 are accurately aligned with the registering apertures 54 and 48, I have provided a novel arrangement by means of which the replaced unit is held in position so that the corresponding cooperating parts register, before the unit is secured to the machine by the bolts 42. This means comprises two guiding or leader pins 64 which extend through apertures 65 formed in the pin holder bar 56 and through the registering ia o other, which might injure the delicate pins or dies when the unit is disconnected from the machine for the purpose of shipping or otherwise handling the same. When blocked, or boxed or tied, the said parts comprising the unit may be safely shipped.

The perforating machine herein shown is provided with the usual platform or paper support 69 which is fastened or secured to the main bed or side frame members 10 by means of a cross bar 70 which is secured to the support by screws 71. The perforating machine is also provided with a discharge chute 72 which extends across the machine and is fastened to the frame of the machine immediately below the die and perforating mecha nism in any well known manner for receiving the waste in perforating paper.

From the above description it will readily be seen that I have provided structure which will permit substitution of a new stripper, pin holder, and die as a unit for one that is being repaired without any loss of ime to the user of the machine, and it will also be noted that I have provided a very simple and efficient device which permits easy and accurate replacement of these parts without danger of injury in handling or Without the necessity of the employment of expert mechanical knowledge, and that this unit when removed from the machine in the manner described will consist of the supplemental bed 37, which, by reason of the bolts 51, will firmly support the stripper holder casting or bar 50 in normal spaced relation, the die plate 45 carried and supported by the supplemental bed 37, the stripper 53 secured by screws 52 to the stripper holder 50, and finally the pin holder bar 56 carrying the pin holder 59 and the delicate perforating pins 55, which will be positioned and retained against shifting to injure the pins and die perforations when being trans ported or handling by the comparatively strong guiding or leader pins 64.

Obviously the loader pins 64 serve no useful function when the parts are properly secured in their operative positions in the machine, but they do no harm, as I prefer to have the reduced lower ends 67 a snug or drive fit in the stripper holder 50 and the enlarged cylindrical portions of these guiding pins having a sliding fit in relation to the pin holder bar 56 for accurately aligning and supporting the same to protect the delicate perforating pins when the unit is detached as described.

While in the above specification I have described one embodiment which my invention may assume in practice, it will, of course, be understood that the same is capable of modification and that modification may be made without departing from the spirit and scope of the invention as expressed in the following claims.

What I claim as my invention and desire to secure by Letters Patent is:

1. A paper perforating machine, comprising a stationary frame, a reciprocable head, and a perforating unit connectible with said head and with said frame and constructed and arranged in a manner to permit of its assembly and disassembly from said head and frame as a unitary structure, said unit comprising a supplemental bed adapted for detachable connection with said frame, a die plate fixed in relation to said supplemental bed and supported thereby, a stripper spaced from said die plate and being rigidly supported by the supplemental bed, a pin holder bar adapted for detachable connection with said reciprocable head, a pin holder carried bythe bar and fixed in a relation thereto, a plurality of spaced apart perforating pins carried by the pin holder and adapted to co-operate with corresponding perforations in said die plate, and means comprising a plurality of guide pins for holding said pin holder bar and said stripper in relative alignment when said unit is disconnected from said frame and said reciprocable head for the purpose of protecting said perforating pins and said die plate against injury, which might fol low from any relative movement otherwise possible between said pin holder bar and said stripper.

2. As an article of manufacture for use in paper perforating machine, provided with a stationary frame and a head reciprocable in relation to said frame, a detachable perforating unit adapted for detachable connection with the head and frame of such machine and constructed and arranged in a manner to permit of its assembly with and disassembly from said head and frame as a unitary structure, said unit comprising a supplemental bed detachable from said frame, a die plate ailixed to said supplemental bed, a stripper spaced from said die plate and supported by the supplemental bed, a pin holder bar, a pin holder affixed to the bar, a plurality of spaced apart perforating pins carried by the pin holder and adapted to co-operate with corresponding perforations in said die plate and in said stripper, and means comprising a plurality of pins interposed between said stripper and said pin holder bar for preventing relative lateral movements therebetween to protect said perforating pins and said die plate when said unitis detached from said frame and said reciprocable head.

In testimony whereof I have signed my name to this specification, on this 12th day of September, A. D. 19%.

PETER A. J UUL. 

